JPS55112618A - Constant voltage circuit - Google Patents

Constant voltage circuit

Info

Publication number
JPS55112618A
JPS55112618A JP1885979A JP1885979A JPS55112618A JP S55112618 A JPS55112618 A JP S55112618A JP 1885979 A JP1885979 A JP 1885979A JP 1885979 A JP1885979 A JP 1885979A JP S55112618 A JPS55112618 A JP S55112618A
Authority
JP
Japan
Prior art keywords
voltage
load
lowered
power supply
gate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1885979A
Other languages
Japanese (ja)
Inventor
Shunpei Yamazaki
Masaharu Ozaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPON PRECISION SAAKITSUTSU KK
Nippon Precision Circuits Inc
Original Assignee
NIPPON PRECISION SAAKITSUTSU KK
Nippon Precision Circuits Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NIPPON PRECISION SAAKITSUTSU KK, Nippon Precision Circuits Inc filed Critical NIPPON PRECISION SAAKITSUTSU KK
Priority to JP1885979A priority Critical patent/JPS55112618A/en
Publication of JPS55112618A publication Critical patent/JPS55112618A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain constant voltage circuit suitable for voltage reduction and stabilization, by supplying power supply voltage between the gate and drain of depletion type MOSFET (DMOST) and picking up the output between the gate and source.
CONSTITUTION: The gate 2 of N channel DMOST1 is connected to load power supply, drain 3 is to the positive power supply VDD, and the source 5 is to the load 4. When the power supply voltage VDD increases and the drain current ID is going to increase, the gate potential VG is lowered to the source potential VS, the increase in the current ID is restricted, and the voltage VL fed to the load 4 is not increased. If the voltage is decreased, the inverse operation is made and the voltage VL of the load 4 is not lowered. When the impedance of the load 4 is increased, the voltage VL is going to increase, but the voltage VG is lowered to the potential VS, the current ID is reduced and the increase in the voltage VL is restricted. When the load impedance is lowered, the inverse operation is made and the lowering in the voltage VL is restricted. When the load is an E-MOS, suitable regulated voltage can be given.
COPYRIGHT: (C)1980,JPO&Japio
JP1885979A 1979-02-20 1979-02-20 Constant voltage circuit Pending JPS55112618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1885979A JPS55112618A (en) 1979-02-20 1979-02-20 Constant voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1885979A JPS55112618A (en) 1979-02-20 1979-02-20 Constant voltage circuit

Publications (1)

Publication Number Publication Date
JPS55112618A true JPS55112618A (en) 1980-08-30

Family

ID=11983258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1885979A Pending JPS55112618A (en) 1979-02-20 1979-02-20 Constant voltage circuit

Country Status (1)

Country Link
JP (1) JPS55112618A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833726A (en) * 1981-08-20 1983-02-28 Sanyo Electric Co Ltd Power supply circuit for mos integrated circuit device
US4451744A (en) * 1981-03-07 1984-05-29 Itt Industries, Inc. Monolithic integrated reference voltage source
US4499416A (en) * 1981-11-25 1985-02-12 Tokyo Shibaura Denki Kabushiki Kaisha Reference voltage circuit for obtaining a constant voltage irrespective of the fluctuations of a power supply voltage
WO1999044267A1 (en) * 1998-02-24 1999-09-02 Lucas Industries Plc POWER SUPPLIES FOR ECUs

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51121759A (en) * 1975-04-17 1976-10-25 Seiko Instr & Electronics Ltd Constant voltage power supply circuit
JPS5337842A (en) * 1976-09-20 1978-04-07 Nippon Precision Saakitsutsu Kk Electronic circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51121759A (en) * 1975-04-17 1976-10-25 Seiko Instr & Electronics Ltd Constant voltage power supply circuit
JPS5337842A (en) * 1976-09-20 1978-04-07 Nippon Precision Saakitsutsu Kk Electronic circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451744A (en) * 1981-03-07 1984-05-29 Itt Industries, Inc. Monolithic integrated reference voltage source
JPS5833726A (en) * 1981-08-20 1983-02-28 Sanyo Electric Co Ltd Power supply circuit for mos integrated circuit device
US4499416A (en) * 1981-11-25 1985-02-12 Tokyo Shibaura Denki Kabushiki Kaisha Reference voltage circuit for obtaining a constant voltage irrespective of the fluctuations of a power supply voltage
WO1999044267A1 (en) * 1998-02-24 1999-09-02 Lucas Industries Plc POWER SUPPLIES FOR ECUs

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